Microseven MSP12VDC2AW Power Adapter Supply 12V DC 1A 1000mA with 100V - 240V AC Input 50/60 Hz 0.35A UL Listed Certified 2.1mm 5.5mm, CCTV IP CAMERA Input Voltage: 100V AC - 240V AC 0.35 A 12V 1A or 12V 1000mA, UL Listed Certified Tips hole size: 5.5*2.1 Power Adapter for CCTV CAMERA, Networking Switch,12V MP3, MP4, Electric Toys, and etc. Compitale with 12V 500mA(0.5A) 12V 750mA(0.75A)